Hubert, Many thanks for the 'istory lesson on the Jodrell Bank tele-o-scope. How well do I remember Sputnik. I carried my 35 mm folding camera (made in USSR Occupied Germany) out to a field a few miles from town with the intention of making a long exposure to get a shot at the tumbling booster rocket. Opened the shutter and the danged thing broke so I missed the picture. [:-( .Yeah, I repaired it, a tiny spring had slipped orf its proper place inside the blade type shutter inside the lens. Jesse, the retarded machinist in Troy, TN MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.